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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1998-8-24
pubmed:abstractText
In this study, an epitope-unmasking technique was used to immunolocalize AE2 anion exchanger polypeptide to basolateral plasma membranes of tubular epithelial cells in mouse kidney. Kidney AE2 immunostaining in mouse kidney was less prominent than in rat, consistent with the relative levels of AE2 mRNA and polypeptide in these two species. Glomeruli showed faint but consistent AE2 immunostaining, whereas proximal tubules were generally unstained. Macula densa epithelial cells displayed bright AE2 immunostaining, and cortical thick limbs were stained at a lower intensity. AE2 immunostaining was weak or absent in type B intercalated cells and principal cells of the cortical collecting duct, but increased in intensity in principal cells of the inner stripe of the outer medulla. AE2 staining in medullary thick limbs was also of greater intensity than in cortical thick limbs. AE2 staining was strong and uniform in the epithelial cells of the inner medullary collecting duct, and in epithelial cells of the papillary surface, the ureter, and the urinary bladder. Extratubular and epithelial cells of the inner medulla also showed punctate intracellular AE2 staining in a Golgi-like distribution that, in contrast to cell surface staining, was sodium dodecyl sulfate-sensitive. Golgi localization of AE2 epitope was confirmed by immunoperoxidase electron microscopy. Reverse transcription-PCR analysis of mouse kidney RNA detected AE2a, AE2b, and an AE2c2 transcript, but an AE2c1 transcript was absent. Unlike in rat, the mouse AE2c2 mRNA splice variant encoded a polypeptide with a novel predicted N-terminal amino acid sequence.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1046-6673
pubmed:author
pubmed:issnType
Print
pubmed:volume
9
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
946-59
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed-meshheading:9621277-Amino Acid Sequence, pubmed-meshheading:9621277-Animals, pubmed-meshheading:9621277-Anion Transport Proteins, pubmed-meshheading:9621277-Antiporters, pubmed-meshheading:9621277-Base Sequence, pubmed-meshheading:9621277-Immunoenzyme Techniques, pubmed-meshheading:9621277-Immunohistochemistry, pubmed-meshheading:9621277-Introns, pubmed-meshheading:9621277-Kidney, pubmed-meshheading:9621277-Male, pubmed-meshheading:9621277-Membrane Proteins, pubmed-meshheading:9621277-Mice, pubmed-meshheading:9621277-Mice, Inbred Strains, pubmed-meshheading:9621277-Microscopy, Immunoelectron, pubmed-meshheading:9621277-Molecular Sequence Data, pubmed-meshheading:9621277-Polymerase Chain Reaction, pubmed-meshheading:9621277-RNA, Messenger, pubmed-meshheading:9621277-RNA Splicing, pubmed-meshheading:9621277-Tissue Distribution, pubmed-meshheading:9621277-Urinary Tract
pubmed:year
1998
pubmed:articleTitle
Immunolocalization and tissue-specific splicing of AE2 anion exchanger in mouse kidney.
pubmed:affiliation
Molecular Medicine Unit, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't